//*****************************************************************************
// Copyright 2017-2019 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//*****************************************************************************

#include "mean.hpp"
#include "ngraph/op/add.hpp"
#include "ngraph/op/constant.hpp"
#include "ngraph/op/divide.hpp"
#include "utils/variadic.hpp"

namespace ngraph
{
    namespace onnx_import
    {
        namespace op
        {
            namespace set_1
            {
                NodeVector mean(const Node& node)
                {
                    auto sum = variadic::make_ng_variadic_op<ngraph::op::Add>(node).front();
                    auto shape = sum->get_shape();

                    // Create a Constant representing the number of inputs with the same shape as
                    // sum
                    auto count = ngraph::op::Constant::create(
                        sum->get_element_type(),
                        shape,
                        std::vector<int>(shape_size(shape), node.get_ng_inputs().size()));

                    return {sum / count};
                }

            } // namespace set_1

            namespace set_8
            {
                NodeVector mean(const Node& node)
                {
                    auto sum = variadic::make_ng_variadic_op<ngraph::op::v1::Add>(node).front();
                    auto shape = sum->get_shape();

                    // Create a Constant representing the number of inputs with the same shape as
                    // sum
                    auto count = ngraph::op::Constant::create(
                        sum->get_element_type(),
                        shape,
                        std::vector<int>(shape_size(shape), node.get_ng_inputs().size()));

                    return {sum / count};
                }

            } // namespace set_8

        } // namespace op

    } // namespace onnx_import

} // namespace ngraph
